This randomized controlled trial aims to evaluate the effectiveness of circadian-based acupressure compared with sham acupressure in improving sleep quality among nursing home residents. Additionally, the study will examine the effects of the intervention on insomnia severity, heart rate variability, and psychological distress, including depression, anxiety, and stress. A total of 80 older adults aged 60 years and above residing in a nursing home in Jakarta, Indonesia, will be randomly assigned to either the circadian-based acupressure group or the sham acupressure group. Participants in the intervention group will receive circadian-based acupressure twice daily, five days per week for four weeks, with acupoints selected and administered according to circadian meridian activity, while the control group will receive sham acupressure at non-acupuncture points with the same frequency and duration. Outcome measures will be assessed at baseline and immediately post-intervention.

Poor sleep quality affects approximately 65% of institutionalized older adults and is associated with adverse outcomes including cognitive decline, psychological distress, falls, and increased mortality. Current geriatric guidelines recommend nonpharmacological interventions as first-line management for sleep disturbances. Acupressure, a low-cost and non-invasive therapy derived from Traditional Chinese Medicine (TCM), has shown promise in improving sleep; however, prior trials have largely used fixed protocols without considering circadian timing. According to TCM meridian clock theory, qi circulates through specific meridians in a 24-hour rhythm, suggesting that time-aligned acupressure may enhance therapeutic effects. To evaluate the effectiveness of circadian-based acupressure on sleep quality in nursing home residents compared with sham acupressure, and to examine its effects on insomnia severity, heart rate variability (HRV), depression, anxiety, and stress. This randomized, participant- and assessor-blinded controlled trial will recruit 80 nursing home residents aged ≥60 years in Jakarta, Indonesia. Eligible participants must have lived in the facility for ≥3 months, score ≥25 on the Mini-Mental State Examination, and have poor sleep quality (PSQI ≥5). Participants will be randomly assigned (1:1) to circadian-based acupressure or sham acupressure. The intervention will be delivered twice daily, five days per week for four weeks: SP6 and HT7 at 11:00 am, and PC6 and GB20 at 7:00 pm, aligning with circadian meridian activity. Each acupoint will be stimulated for 3 minutes using standardized pressure. The sham group will receive massage at non-acupoints with identical frequency and duration. The primary outcome is sleep quality measured by the Pittsburgh Sleep Quality Index (PSQI). Secondary outcomes include insomnia severity (Athens Insomnia Scale), HRV (ANSWatch), and psychological distress (DASS-21). Measurements will be collected at baseline and immediately post-intervention (Week 4). Analyses will follow the intention-to-treat principle. Baseline differences will be assessed using chi-square tests, ANOVA, or nonparametric equivalents. Intervention effects over time will be examined using generalized estimating equations to assess group × time interactions, adjusting for demographic covariates. Post-hoc pairwise comparisons will be conducted when appropriate. Missing data will be handled using multiple imputation. Statistical significance will be set at p ≤ 0.05. This study is the first randomized controlled trial to investigate circadian-based acupressure in nursing home residents. Findings will provide evidence on whether aligning acupressure with circadian meridian activity enhances sleep quality and related physiological and psychological outcomes, supporting a feasible and theory-driven nonpharmacological intervention for institutionalized older adults.

Inclusion Criteria:

• age ≥60 years
• ability to communicate and complete the questionnaires in Indonesian
• had lived in the nursing home for at least 3 months,
• had a Mini-Mental State Examination score of ≥25, had self-reported PSQI Indonesian version scores of ≥5 (where higher scores indicate worse sleep) over the past 4 weeks,
• agreed to participate in the research

Exclusion Criteria:

• The exclusion criteria in this study were severe psychiatric disorders, such as schizophrenia, bipolar disorder, or current receipt of intensive psychiatric treatment.

Particular data will be shared: Individual participant data that underlie the results reported in this article after identification (text, tables, figures, and appendices).

Beginning 9 months and ending 60 months following article publication.

Investigators whose proposed use of the data has been approved by an independent review committee ("learned intermediary") identified for this purpose, for example, for a meta-analysis or other study.

Participant will be blinded to group allocation. Outcome assessors will remain blinded to group allocation until the end of the study, therapists will be aware of group assignments due to the nature of the intervention.